[Dovecot] updated ubuntu packages

[Jeff Kowalczyk]

I'd like to deploy an ubuntu-6.06 server running dovecot-1.0rc2 and
postfix-2.3.0. Unfortunately, their dovecot packaging has not been
recently updated:

dovecot-common-1.0.beta3-3ubuntu5.2
dovecot-imapd-1.0.beta3-3ubuntu5.2
dovecot-pop3d-1.0.beta3-3ubuntu5.2

postfix-2.2.10-1ubuntu0.1

I have 'universe' enabled. Does anyone know of an alternate  repository
for bleeding-edge dovecot and postfix packages?

As a debian/ubuntu newbie, I don't expect that rolling my own properly
secure package is practical or advisable at this early stage. Thanks.